Ipheion 'Rolf Fiedler'
diana chapman (Tue, 02 Dec 2003 08:29:20 PST)
Here we go again! Is N. felipponei the correct name for N. sellowianum?
Diana
----- Original Message -----
From: <Antennaria@aol.com>
To: <pbs@lists.ibiblio.org>
Sent: Monday, December 01, 2003 8:02 PM
Subject: Re: [pbs] Ipheion 'Rolf Fiedler'
Regarding the ongoing discussion of Ipheion vs. Tristagma. I'll be as free
with my opinion as others. Regarding the yellow species, sometimes
referred to
as Ipheion, I have been long since convinced that they are more
appropriate
under Nothoscordum, following Thad Howard's impression of the genus. I
grow
most of the yellow species, and while the assertion seems probable, I
often
wonder about the relationship between the multi-flowered species, such as
N.
montevidense, ostenii, minarum, versus the much larger single-flowered
species which
seem rather different, such as felipponei, hirtellum, and dialystemon
(felipponei in flower as I write). The latter group of yellow species
seems very
different than the first group of yellow species.
The entire Ipheion genus was subsumed
into Tristagma since at least 1963? Is this true?
===================================
Have you been hiding under a rock somewhere?
They are! I took the citations I quoted from the
International Plant Names Index, so they are
readily available on the Web to anyone
interested in pursuing the matter.
Wow! All subtlety aside and sarcasm running amuck. I haven't experienced
such a definitive consensus. What amazes me, even in more recent
publications,
more recent than 1963, is the waivering of S. American taxononomic status,
not
only among species, but to which of the many genera they are ascribed to.
Almost all of the "yellow Ipheions" have been ascribed to 4 or more
genera, which I
find dazzling and indicative of a taxonomic mess.
Back in the 1980s I saw Tristagma nivale in bloom, and to consider this
the
same as most "so-called" Ipheions is a great stretch. Of course, there
will
DNA studies on these that'll prove without a shadow of doubt that they are
all
actually Compositae ;-) (now, that's a bit of sarcasm).
Just a quick Google search for Tristagma uniflorum
turned up dozens of reference sites in several
languages whose authors were at least aware
of the synonymy
Demonstrating the number of "hits" on a google search is rather
meaningless,
because you'll find just as many hits under whatever genus name you want
to
search under. Google searches are not a measure of what taxonomic opinion
is
valid, albeit, they are interesting.
In 1963, Hamilton P. Traub, editor of Plant Life,
wrote: "Poeppig (1833) proposed the genus
Tristagma, with T. nivale (T. nivale Poepp. ex
Endl. 1835) as the type. This generic name
has priority over Ipheion Rafinesque (1837)
with a type (I. uniflorum) [Lindl.] Raf.) which
has to be transferred to Tristagma on
phylogenetic grounds." See:
Liliaceae Tristagma uniflorum (Lindl.) Traub
in Plant Life, xix. 61 (1963).
This means that there is no more Ipheion.
Citing Traub as "definitive" carries a certain amount of risk and
skepticism.
Traub is rather famous (notorious, or infamous is more like it) for being
a
consummate splitter (even among splitters), as well as being
self-motivated to
name as many species and taxonomic revisions to his claim as possible. As
a
student of the genus Allium myself, I do know that Traub is responsible
for
identifying quite a number of Mexican Allium, which still stand to this
day.
But then again, I look towards consensus, and have heard sufficient
consensus on
this group within Allium to carry forward (and judging from my own
experience
growing 5 species out of 15-16 Mexican species with which to gauge)... yet
with other groups of plants, the status is much more muddied and much more
contentious.
This means that there is no more Ipheion.
All the correctly "recognized" species in this
genus are now Tristagma.
Ah, but that's half the trick right there. What constitutes "all the
correctly recognized species in this genus [Ipheion] are now Tristagma" is
an
undefined variable and therefore rather meaningless. I'm still waiting
for a
definitive enumeration of the South American bulbous genera, which seem to
freely
float between various genera like fruit flies hovering between various
types of
rotting fruit. One cannot be as certain as has been proposed.
Mark McDonough Pepperell, Massachusetts, United States
antennaria@aol.com "New England" USDA Zone 5
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